Well-rod lifter.



G. J. ATLESON.

WELL ROD LIFTER. APPLICATION FILED MAY 1, 1909.

945,902., Patented Ja1i,11,1910.

UNTTEE STATES PATENT QIBFTQE.

CARL J. ATLESON, F ELM, NORTH DAKOTA.

WELL-ROD LIFTER.

To all whom it may concern:

Be it known that. I, CARL J. ATLEsoN, a citizen of the United States,residing at Elm, in the county of Morton and State of North Dakota, haveinvented a new and useful ell-Rod Lifter, of which the following is aspecification.

My invention relates to devices used by well drillers for raising thedrill rod out of the well when so desired; and the object is to providean efficient device of said kind.

In the accompanying drawing, Figure 1 is a side elevation of my improveddrill rod lifter shown in operative position upon a drill rod. Fig. 2 isa top view of Fig. 1' with the ropes and ring in the top thereofremoved. Fig. 3 is a section on the line (4-04 of Fig. 2. Fig. 1 is atop view of the slider tongs employed in connection with my device. Fig.5 is a section as on line bZ) in Fig. 3 of the device.

Referring to the drawing by reference numerals, 1 designates the mainpipe to be sunk in drilling a deep well, 2 is the coupling at the upperend thereof ready to receive the next higher section of pipe. In saidpipe works the drill (not shown) whose rod 3 may be solid, or tubular asin Figs. 2 and 3. As is well known, in such well digging, the drill rodis reciprocated up and down to make the drill work, and the rod anddrill is periodically removed from the pipe 1, to admit suitable meansfor cleaning out the sand and chips worked loose by the drill and thenthe drill is lowered again into the pipe and operated at the bottom endof it. It is for such removal and replacing of the drill that I providemy de vice, and the same is constructed as follows:

A yoke 41 is formed with an upwardly and downwardly flaring collar 5,and at the opposite sides thereof with a pair of arms 6, between whichis fulcrumed at 8, a lever 7, each lever having an upwardly andoutwardly disposed arm 9 connected by a cable or chain 10 to a ring 11,to which a hoisting cable 12 is attached. Near above said fulcrums thelevers are formed with short arms 13, each of which has a notch 14, inwhich is fitted a steel jaw 15 retained by a screw 16 passed through thearm and threaded into the jaw. Said jaws are provided with segmentaltoothed or corrugated faces 17 adapted to grip the drill rod betweenthem when the arms 9 are brought upward and relieve Specification ofLetters Patent.

Application filed May 1, 1909.

Patented Jan. 11, 1910.

Serial No. 493,398.

the rod when the arms are brought downward. The dies or jaws 15 are thusdetachable and exchangeable for smaller or larger ones as the occasionmay require.

Each lever 7 has a downwardly projecting heel 18 with a preferablysegmental slot 19 in it. In these slots move-pins 20, which, are eachinserted through two arms 21 of a yoke composed of said arms 21 and acentral collar 22, through which the drill rod passes, said collar beingflared at its upper and lower ends to enable couplings, like 23 of thedrill rod to pass easily through the yoke without catching on it and forsimilar reason is likewise flared at both ends.

The regular slider tongs 24 consist of two levers pivoted together at 25and pro vided with opposite notches 26 by which to grip the drill rod.

In the operation of the device the slider tongs are placed upon the topend of the well tube 1 or its coupling 2 in position to grip the drillrod, the devlce is reciprocated up and down by the cable 12 and anysuitable power applied thereto when the device is lowered and the yoke22 strikes the tongs 24 its pins 20, which may be provided with rollers(not shown) in the slots 19, throw the levers 7 upward simultaneouslyand cause the jaws 15 to grip the drill rod firmly and as the tongs arenow released and the device is pulled upward the lever arms 9 cause thejaws to retain their grip and pull the well rod upward, the tongs areagain closed about the well rod and the device is allowed to descendupon them again, and so on until the drill is brought out of the well.To lower the drill rod again into the well the tongs 21 are applied tothe drill rod to support it while the ripping device isapplied at ahigher point on the rod and so operated that it lowers the drill rodstep by step, the tongs holding the rod while the device is moved upwardfor a new hold. The device may also be used for pulling up the tubes ofdriven wells and Artesian wells.

It will be observed that the pivots 20 in the lower yoke are fartherapart than the pivots 8 in the upper yoke, and that the lower yoke helpsto guide and keep the de vice in its upright position, besides the otherfunctions already described.

What I claim is:

1. In a device for the purposes set forth, a yoke having a centralcollar and two pairs of arms extending one pair from oppositesidesthereof, a lever pivoted between each pair of arms and having upwardlyand normally outwardly disposed long arms, flexible connection betweensaid arms and adapted to have hoisting means applied thereto, steel jawscarried by said levers and having adjaccnt roughened surfaces forgripping the object to be hoisted or lowered by the device, said levershaving heels extending downwardly and outwardly beyond their fulci'umsand provided each with a slotted hole, a second yoke similar to thefirst one and having each pair of its arms arranged in straddlingposition upon one of the heels and provided with a pivot passed throughthe arms and the slot in the heel.

2. In a device for the purposes set forth, a yoke having a centralcollar and two pairs of arms extending one pair from opposite sidesthereof, a lever pivoted between each pair of arms and having upwardlyand normally outwardly disposed long arms, flexible connection betweensaid arms and adapted to have hoisting means applied thereto, steel jawscarried by said levers and having adjacent roughened surfaces forgripping the object to be hoisted or lowered by the device, said levershaving heels extending downwardly and outwardly beyond their fulcrumsand provided each with a slotted hole, a second yoke similar to thefirst one and having each pair of its arms arranged in straddlingposition upon one of the heels and provided with a pivot passed throughthe arms and the slot in the heel, said second yoke being curveddownward intermediate its ends.

3. In a device for the purposes set forth, a yoke having a centralcollar and two pairs of arms extending one pair from opposite sidesthereof, a lever pivoted between each pair of arms and having upwardlyand normally outwardly disposed long arms, flexible connection betweensaid arms, and adapted to have hoisting means applied thereto, steeljaws carried by said levers and having adjacent roughened surfaces forgripping the object to be hoisted or lowered by the device, said levershaving heels extending downwardly and outwardly beyond their fulcrumsand provided each with a slotted hole, a second yoke similar to thefirst one, and having each pair of its arms arranged in straddlingposition upon one of the heels and provided with a pivot passed throughthe arms and the slot in the heel, said slots in the heels of the leversbeing of segmental form.

In testimony whereof I affix my signature, in presence of two witnesses.

CARL J. ATLESON. \Vitnesses JOHN JERDEN, ALBIN PETERSON.

